New secrets system and quotas (#35)

classes/exceptions.py

@@ -286,3 +286,23 @@ class UserCredentialsInvalid(HTTPException):
             status_code=401,
             detail=self.openapi["content"]["application/json"]["example"]["detail"],
         )
+
+
+class UserMediaQuotaReached(HTTPException):
+    """Raises HTTP 403 if user's quota has been reached."""
+
+    def __init__(self):
+        self.openapi = {
+            "description": "Media Quota Reached",
+            "content": {
+                "application/json": {
+                    "example": {
+                        "detail": "Media quota has been reached, media upload impossible."
+                    }
+                }
+            },
+        }
+        super().__init__(
+            status_code=403,
+            detail=self.openapi["content"]["application/json"]["example"]["detail"],
+        )